There was a lot of rewriting stuff to make the engine GraphQL-first. Before, the engine received a different spec as input, and GraphQL worked behind an adapter

There was a lot of rewriting stuff to make the engine GraphQL-first. Before, the engine received a different spec as input, and GraphQL worked behind an adapter. Now, the engine speaks GraphQL language. Then completing the GraphQL schema, fully complying with the spec, and adding all the new features. That was quite a bit of effort. Yes, there were many "typo" commits, changing simply one word. But there were also plenty of commits with dozens of changes and, in the initial rewriting stage, even hundreds of changes. It really took 16k commits. I'll write a blog post on graphql-api.com and provide some more info (maybe sometime this weekend?).